Chapter 17: Activities 486
4. Press q 2 to select 2:Zoom In. Use |, ~, }, and † to move the free-moving
cursor onto the apparent intersection of the functions on the right side of the display.
As you move the cursor, notice that the
X and Y values have one decimal place.
5. Press Í to zoom in. Move the cursor over the intersection. As you move the
cursor, notice that now the
X and Y values have two decimal places.
6. Press Í to zoom in again. Move the free-moving cursor onto a point exactly on
the intersection. Notice the number of decimal places.
7. Press y /
5 to select 5:intersect. Press Í to select the first curve and Í
to select the second curve. To guess, move the trace cursor near the intersection.
Press Í. What are the coordinates of the intersection point?
8. Press q
4 to select 4:ZDecimal to redisplay the original graph.
9. Press q. Select
2:Zoom In and repeat steps 4 through 8 to explore the apparent
function intersection on the left side of the display.
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